David b



D B. ROGERS.

Die for Making Cultivator Irons.

Patented March 28, 1854.

m PETERS. Fhalo LII-ugmphe DAVID B. ROGERS,'0F PITTSBURGH,

MACHINE non FORMING =CI-IL'JQIVATOB-TEETH.

Specification of Letters Patent No. 10,706, dated March 28, 1854.

- facturingCultivator-Teeth and other Similar Articles; and I do hereby declare that the following is a full, clear, and exact description of the. construction and operation of the same, reference being had to the anneXed drawings, making a part .of thisspecification, of which Figure l, is a front view of the die for cultivator teeth; Fig. 2 a top View of the same; Fig. 3, a vertical section through line III ofFigs. 1 and 2; Fig. l, a side view of the counter die or follower; Fig. '5, a face view of the follower; Fig. 6, a cross section through line III-IV of Fig. 4; Fig. 7, a"

perspective view of a machine by which the dies may be operated; Figs. 8 and 9 parts of said machine.

The same letters of reference indicate like parts. a

A is the die for cultivator teeth; a, a groove to produce a bead in the tooth; B, a

seat or rest, to which the die is riveted or bolted; C, a pin or tongue, corresponding.

with the bead groove in the die; I), a spring, operating on the tongue. The cultivator tooth, after being pressed in the die, has a r 0 back, after the cam has operated on it.

tendency of sticking fast in the bead groove; the tongue with spring has the purpose to remedy this so as to effect an easy removal of the tooth out of the die.

Dis the counter die or follower, of a shape to correspond with the hollow in the die A; e, the bead of the follower.

E is a knife for the purpose of cutting the foot of the cultivator tooth sharp and smooth and in the proper angle, by cutting off the Waste metal, when the tooth is still held between the dies. The tail f, of the knife passes through a corresponding' holein the follower, and a spring 9, fastened on the head of the follower operates on it. I

F is a plate or washer between the head of the follower and the knife, which may be more or less crowded down on the knife by putting thin metal sheets between it and the head.

The described die and follower are designed to be operated in the followingmanner: The die A'is fastenedstationary, and the die or follower D is pressed into it, producing hereby a sheet of iron put between to I be shaped ina cultivatortooth';'imn1ediately after that, when the tooth is still kept between the dies, the knife YE cuts the foot of the tooth in the proper angle off, to which purpose the upper surface of t he dieA is inclined (according to the shape-ofgt'he foot); land the knife moving close on-it, bothwill .operatejlike shears. To show the manner of operating the dies and knife more fully a machine is represented in Figs. 7, 8 and 9, constructed for the purpose. In Fig.' '7 the die :and followerparts are marked with the same letters 10' Gr and are strong plates connected by of reference used in Figs. 1 to 6..

four rods J J, J J. Kis a'box inclosing one end of said rods, and connected firmly with the back plate H. The plates, rods andboX form the frame of the machine.

L is a vertical shaft. bearing the double cam, or cams M and N. The cam N which is indicated by dotted lines in Fig. 8, and in Fig. 9 has aless sweep than the cam M.

O is a sliding piece onwhich the cam N operates. It is shaped at its extremity Z to receive the follower D, having a dovetailed :recess, in which the projectingv flanges m of the follower fit. This sliding piece is guided by the-rods P P, which are firmly bolted to the box K, and by the rods J J.

Q is a spiral spring, which draws the piece R is another sliding piece. It is moved by knife E. Thispiece is guided by the rods J J, and is moved back together. with the piece 0 by the action of the spiral spring Q.

S S are ribs, riveted on plate G of a suitable shape to receive the seat B of die A.

T is a lever set on the cam shaft. The operation of the machine is as follows Ifthc shaft L is set inmotion either by the lever T or otherwise both cams M and N operate'on their respective sliding pieces 0 and R, which will travel together, during the first part of therotation of the cam vshaft, the cams being equal curved to the point 10. From there the piece 0 with the follower doesnot advance any more, the cam -'N being concentric fromp oi' nt p to 9; but 7 the piece R receives an additional motion (according to the continued eccentricity of cam M) whereby the knife is moved on and cuts ofl the foot of the cultivator tooth,

which has been pressed by the action of cam VVI of Fig. 11.

soon as point Q, of the cams passes the edges r of the sliding pieces, both will be drawn back by the action of the spiral spring Q,"

the die, and the machine is ready for another operation.

Figs. 10 to 15 represent a die and follower, constructed after the same method, and to be operated by the described machine for making shovel plow shears. In these figures, the parts corresponding to those in Figs. 1 to 6 are marked with the same letters of reference; Fig. 10 is a face view of the die; Fig. 11, a top View of the same; Fig. 12, a vertical section through line Fig. 18 is a side view of the counter die or follower, and shows a vertical section of a box in which the follower is set; Fig. 1 1 a horizontal section through line VII to VIII of Fig. 13. Fig. .15, is a face view of the boX with the knife, the die taken out; A is the die; B, flanges to fasten the die to the machine; D, the follower; E, the knife; g, its spring; F, washer plate on the knife; U, a boX to receive the die D; V, V, set screws to keep the die to its place.

By the arrangement of putting the counter die in a box, to which '(as the'Figs. 13 to 15 show) the knife and appertaining parts are attached,'the die may be exchanged with another one, without changing the knife; making hereby the dies much less expensive.

The advantage of the described constructionof dies and .their operating machine,

combining the operations of pressing in shape, and cuttingorfinishing the foot of cultivator teeth and other similar articles, is, that the article is finished in one heat andin a speedy way.

.Vhat I claim as new, and desire to secure by Letters Patent isa The arrangement of the cutter or knife and swaging dies, when constructed and operated substantially as described, whereby I am enabled to swage the sheet blank into shape and to give to the foot of the tooth by the cutter its shape and edge, after it has been swaged into form and when itis held firmly between the dies.

DAVID B. ROGERS.

. Witnesses:

HENRY MoEsER, n

JOHN W. BARRS. 

